<template>
    <fieldset>
        <legend>tab</legend>
        <legend>tab切换案例</legend>
       

        <button v-for="btn in buttons" :key="btn" :class="['tab-button',{active:btn === selectBtn} ]" @click='handleClick(btn)'>{{btn}}</button>
        <div class="tab" :is="dynamic">12312312</div>
    </fieldset>
</template>


<script>
 import emailCom from './email-com.vue'
    import homeCom from './home-com.vue'
    import mineCom from './mine-com.vue'

    export default {
        

        data(){
            return {
                buttons:['email','home','mine'],
                selectBtn:'email',
            }
        },
        methods:{
            handleClick(btn){
                this.selectBtn = btn;
                console.log(btn);
            }
        },
        computed:{
            dynamic(){
                return this.selectBtn + '-com'
            }
        },
        components:{
            'email-com':emailCom,
            'mine-com':mineCom,
            'home-com':homeCom,
        }
    }
    

</script>

<style scoped>
    .tab-button {
        padding: 6px 10px;
        border-top-left-radius: 3px;
        border-top-right-radius: 3px;
        border: 1px solid #ccc;
        cursor: pointer;
        background: #f0f0f0;
        margin-bottom: -1px;
        margin-right: -1px;
    }

    .tab-button:hover {
        background: #e0e0e0;
    }

    .tab-button.active {
        background: red;
    }

    .tab {
        border: 1px solid #ccc;
        padding: 10px;
    }
    h1 {
        margin:0;
    }
</style>